Shortening a HS precision stock

I have a Rem Police with a HS Precision stock that needs to be shortened.
The recoil pad looks like it has been glued on. I understand these stocks are foam filled. There is some kind of line about half an inch from the butt. Is this a cut line for shortening? A half inch will do it. I plan to use a band saw to follow the line down and re-glue the butt on. Anyone here do this before?